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Polystyrene foam eps sheets

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Skip dipped some sheets of POLYSTYRENE FOAM EPS SHEETS!
New in a pack of 6....
plus a dozen lengths of C16 4 x 2's
Asked the chap filling the skip first... said help yourself!:winner1st:
What townies throw away!!!!

What thickness for roof insulation.... 50 mm if Kingspan but how much for this stuff?

Chons da
 

Newbeeneil 

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PIR/PUR – 100mm

Phenolic – 90mm

EPS – 170mm

Equivalent thicknesses of common insulation boards.
Kingspan is in the PIR/PUR group.
 

Ian123 

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Given there are no air tight seals and often wooden parts between insulation and boxes I think anything over an inch of celotex or it’s equivalent it’s likely to be overkill.
 
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